232771821893 has 4 divisors (see below), whose sum is σ = 250677346668. Its totient is φ = 214866297120.

The previous prime is 232771821871. The next prime is 232771821929. The reversal of 232771821893 is 398128177232.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18197200609 + 214574621284 = 134897^2 + 463222^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-232771821893 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (232771841893) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8952762368 + ... + 8952762393.

It is an arithmetic number, because the mean of its divisors is an integer number (62669336667).

Almost surely, 2^232771821893 is an apocalyptic number.

It is an amenable number.

232771821893 is a deficient number, since it is larger than the sum of its proper divisors (17905524775).

232771821893 is a wasteful number, since it uses less digits than its factorization.

232771821893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17905524774.

The product of its digits is 2032128, while the sum is 53.

The spelling of 232771821893 in words is "two hundred thirty-two billion, seven hundred seventy-one million, eight hundred twenty-one thousand, eight hundred ninety-three".